@ARTICLE{Giżejowski_M.A._Nośność_2016, author={Giżejowski, M.A. and Szczerba, R.B. and Gajewski, M.D. and Stachura, Z.}, number={No 4 / II}, journal={Archives of Civil Engineering}, pages={35-71}, howpublished={online}, year={2016}, publisher={WARSAW UNIVERSITY OF TECHNOLOGY FACULTY OF CIVIL ENGINEERING and COMMITTEE FOR CIVIL ENGINEERING POLISH ACADEMY OF SCIENCES}, abstract={Assessment of the flexural buckling resistance of bisymmetrical I-section beam-columns using FEM is widely discussed in the paper with regard to their imperfect model. The concept of equivalent geometric imperfections is applied in compliance with the so-called Eurocode’s general method. Various imperfection profiles are considered. The global effect of imperfections on the real compression members behaviour is illustrated by the comparison of imperfect beam-columns resistance and the resistance of their perfect counterparts. Numerous FEM simulations with regard to the stability behaviour of laterally and torsionally restrained steel structural elements of hot-rolled wide flange HEB section subjected to both compression and bending about the major or minor principal axes were performed. Geometrically and materially nonlinear analyses, GMNA for perfect structural elements and GMNIA for imperfect ones, preceded by LBA for the initial curvature evaluation of imperfect member configuration prior to loading were carried out. Numerical modelling and simulations were conducted with use of ABAQUS/Standard program. FEM results are compared with those obtained using the Eurocode’s interaction criteria of Method 1 and 2. Concluding remarks with regard to a necessity of equivalent imperfection profiles inclusion in modelling of the in-plane resistance of compression members are presented.}, type={Artykuły / Articles}, title={Nośność elementów stalowych ściskanych i zginanych bez zwichrzenia na podstawie koncepcji równoważnych imperfekcji geometrycznych}, title={Beam-column in-plane resistance based on the concept of equivalent geometric imperfections}, URL={http://www.czasopisma.pan.pl/Content/103292/PDF-MASTER/15%20Beam-Column%20In-Plane%20Resistance%20Based%20on%20the%20Concept%20of%20Equivalent%20Geometric%20Imperfections.pdf}, keywords={dwuteownik stalowy, zginanie i ściskanie, nośność na wyboczenie giętne, równoważne imperfekcje geometryczne, modelowanie FEM, steel I-section, beam-column, flexural buckling resistance, equivalent geometric imperfections, FEM modelling}, }